Lock device of vehicle door, and vehicle door system

Abstract

To avoid a situation in which a whole actuator has to be replaced.SOLUTION: A lock device of a vehicle door of an embodiment of the present invention comprises an actuator, a second shaft, and a second shaft support part. The actuator includes: a movable body moving with an opening / closing door of the entrance of the vehicle in the opening / closing direction of the entrance; a housing fixed to the vehicle body; a first shaft reciprocatingly movable between the inside and the outside of the housing in one direction; and a coil for driving the first shaft by an electromagnetic force. The second shaft moves between a locking position, at which the door is locked in cooperation with the movable body in the fully closed position of the door when the first shaft moves to the outside of the housing, and an unlocking position, at which the door is unlocked not in cooperation with the movable body when the first shaft moves to the inside of the housing, while being in cooperation with the first shaft in the one direction of movement. The second shaft support part movably supports the second shaft along the one direction while being fixed to the vehicle body. A gap of the engagement part between the first shaft and the second shaft in the opening / closing direction is larger than a gap of that between the second shaft and the second shaft support part in the opening / closing direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vehicle door lock device and a vehicle door system. [Background technology]

[0002] Patent Document 1 discloses a configuration in which a latch rod moves into a latch hole to lock a sliding door. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-324159 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the configuration disclosed in the above Patent Document 1, when an external force is applied to the sliding door while it is fully closed, it is necessary to pull up the latch bar while rubbing it against the fitting part inside the solenoid. Therefore, the latch bar and the fitting part inside the solenoid will wear out, and there is a high possibility that the entire solenoid will have to be replaced.

[0005] The present invention has been made to solve the above-mentioned problems, and aims to provide a vehicle door locking device and a vehicle door system that can avoid placing a load on the actuator and avoid having to replace the entire actuator. [Means for solving the problem]

[0006] As a means for solving the above problems, the present invention has the following configuration. (1) A vehicle door locking device according to an aspect of the present invention includes an actuator including a movable body that moves in an opening / closing direction together with a door that opens and closes the entrance of a vehicle in an opening / closing direction, a housing part fixed to a body of the vehicle, a first shaft part that is capable of reciprocating in one direction between the inside and the outside of the housing part, and a coil that drives the first shaft part by electromagnetic force, a second shaft part that engages with the first shaft part in the moving direction in the one direction and moves between a locked position where the movable body engages with the movable body at a fully closed position of the door when the first shaft part moves to the outside of the housing part to lock the door, and an unlocked position where the movable body does not engage with the movable body when the first shaft part moves to the inside of the housing part, and a second shaft support part fixed to the vehicle body and supports the second shaft part movably along the one direction, wherein a gap in the opening / closing direction of an engagement portion between the first shaft part and the second shaft part is larger than a gap in the opening / closing direction between the second shaft part and the second shaft support part.

[0007] According to this configuration, when the first shaft moves outside the housing, the first shaft and the second shaft move together, and the second shaft moves to the locked position. This locks the door. At this time, an external force may be applied from the moving body in the door opening / closing direction. Even in this case, the gap in the opening / closing direction of the engagement portion between the first shaft and the second shaft is larger than the gap in the opening / closing direction between the second shaft and the second shaft support, so that the load due to the external force is transmitted from the second shaft to the second shaft support, and not to the first shaft. This makes it possible to avoid a load being applied to the actuator, and to avoid the need to replace the entire actuator.

[0008] (2) In the vehicle door lock device described in (1) above, one of the first shaft portion and the second shaft portion may have a fitting hole extending along the opening / closing direction, and the other of the first shaft portion and the second shaft portion may have a pin portion that fits into the fitting hole, and a gap in the opening / closing direction between a wall portion forming the fitting hole and the pin portion may be larger than a gap in the opening / closing direction between the second shaft portion and the second shaft support portion.

[0009] (3) In the vehicle door lock device described in (1) or (2) above, the actuator may further include an elastic portion that presses the first shaft portion toward the outside of the housing portion, and the actuator may move the second shaft portion connected to the first shaft portion from the locked position to the unlocked position by pulling up the first shaft portion by the electromagnetic force against the pressing force of the elastic portion.

[0010] (4) The vehicle door locking device described in (3) above may further include a rotating body portion that is rotatable about an axis parallel to the one direction, that rotates in contact with the moving body at a position different from the position at which the second shaft portion engages when the door is in a fully closed position, and that holds the second shaft portion pulled up by the electromagnetic force in the unlocked position.

[0011] (5) In the vehicle door lock device described in (4) above, the second shaft portion further includes a convex portion extending radially of the second shaft portion, and the rotating body portion includes a shaft extending along an axis parallel to the one direction and rotatable around the axis parallel to the one direction, a striker extending radially of the shaft and contacting the moving body in a fully closed position of the door, and a limiting wall formed on the shaft and contacting the convex portion to limit movement of the second shaft portion from the unlocked position to the locked position, and the limiting wall may move from a limiting position where it contacts the convex portion and limits movement of the second shaft portion to the locked position to a non-restricting position where it does not limit movement of the second shaft portion to the locked position when the striker contacts the moving body and rotates together with the shaft.

[0012] (6) In the vehicle door lock device described in (5) above, the rotating body portion may further include a shaft support portion fixed to the vehicle body and rotatably supporting the shaft, and a gap between the shaft support portion and the shaft may be larger than the gap between the second shaft support portion and the second shaft portion.

[0013] (7) The vehicle door lock device described in (6) above may further include a fixing plate that is fixed to the vehicle body and that fixes the housing portion, the second shaft support portion, and the shaft support portion.

[0014] (8) In the vehicle door lock device described in any one of (1) to (7) above, the one direction may be a direction along a vertical direction.

[0015] (9) A vehicle door system according to an aspect of the present invention comprises: an actuator including a door for opening and closing an entrance of a vehicle; a movable body fixed to the door and moving together with the door in an opening and closing direction to open and close the entrance; a housing fixed to a body of the vehicle; a first shaft capable of reciprocating in one direction between the inside and the outside of the housing; and a coil for driving the first shaft by electromagnetic force; a second shaft connected together with the first shaft in the moving direction in the one direction and moving between a locked position where the door is fully closed and engages with the movable body to lock the door when the first shaft moves to the outside of the housing, and an unlocked position where the first shaft does not engage with the movable body when the first shaft moves to the inside of the housing; and a second shaft support fixed to the vehicle body and supporting the second shaft movably along the one direction, wherein the first shaft and the second shaft are connected so as to be movable relative to each other along the opening and closing direction.

[0016] According to this configuration, when the first shaft moves to the outside of the housing, the first shaft and the second shaft move together, and the second shaft moves to the locked position. This locks the door. At this time, an external force may be applied from the moving body along the door opening / closing direction. Even in this case, the first shaft and the second shaft are connected to be relatively movable along the door opening / closing direction, so that the load due to the external force is not transmitted to the first shaft. This makes it possible to avoid a load being applied to the actuator, and to avoid a situation in which the entire actuator needs to be replaced. Effect of the Invention

[0017] According to the present invention, it is possible to prevent a load from being applied to the actuator, and to avoid a situation in which the entire actuator needs to be replaced. [Brief description of the drawings]

[0018] [Figure 1] 1 is a perspective view of a vehicle door system according to an embodiment; [Diagram 2] 1 is a perspective view of a vehicle door lock device according to an embodiment in a locked state; [Diagram 3] 1 is a front view of a vehicle door lock device according to an embodiment in a locked state; [Figure 4] 1 is a perspective view of a vehicle door lock device according to an embodiment in an unlocked state; [Diagram 5] 1 is a front view of a vehicle door lock device according to an embodiment in an unlocked state; [Figure 6] 4 is a perspective view of an engagement portion between a first shaft portion and a second shaft portion in the embodiment. FIG. [Figure 7] 4 is a perspective view including a cross section of a second axis support portion and a shaft support portion of the embodiment. FIG. [Figure 8] FIG. 4 is a perspective view showing a locked state when a solenoid is demagnetized in the embodiment. [Figure 9] FIG. 2 is a perspective view showing an unlocked state when a solenoid in the embodiment is excited. [Figure 10] 13 is a perspective view showing a state (unlocked state) in which the limiting wall of the rotating body is in contact with a protruding portion of a second shaft portion to limit movement to a locked position in the embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following embodiment, an example of a vehicle door system having a pair of doors that open and close the entrance and exit of a railway vehicle (car) is described. In the following description, expressions indicating relative or absolute arrangements, such as "parallel," "orthogonal," "center," and "coaxial," do not only mean such arrangements strictly, but also include a state in which the components are relatively displaced with a tolerance or an angle or distance that provides the same function. In the drawings used in the following description, the scale of each component has been appropriately changed to make each component recognizable in size.

[0020] <Vehicle door systems> FIG. 1 is a perspective view of a vehicle door system 1 according to an embodiment. As shown in Fig. 1, a vehicle door system 1 includes a door 10 for opening and closing a vehicle entrance 9. Note that Fig. 1 shows one door 10 of a pair of doors. Fig. 1 shows a state in which the door 10 is located in a fully closed position.

[0021] In the following explanation, an X, Y, Z Cartesian coordinate system is used as necessary. The X direction corresponds to the front-to-rear direction of the vehicle. The Y direction corresponds to the width direction of the vehicle. The Z direction corresponds to the height direction of the vehicle (direction of gravity) perpendicular to the X and Y directions. In the following explanation, of the X, Y, and Z directions, the arrow side in the figure is the plus (+) side, and the opposite side to the arrow is the minus (-) side. The +Y side corresponds to the outer side in the width direction, and the -Y side corresponds to the inner side in the width direction. The +Z side corresponds to the upper side in the direction of gravity, and the -Z side corresponds to the lower side in the direction of gravity.

[0022] The vehicle door system 1 includes a door opening / closing device 20 that drives the door 10 to open and close. In the illustrated example, the door opening / closing device 20 includes a driving source (e.g., a motor) (not shown) that generates a driving force to drive the door 10, a rack 21 that is a long member that moves linearly upon receiving the driving force from the driving source, and a connecting member (not shown) that connects the rack 21 to the door 10. The rack 21 meshes with a pinion incorporated in the driving source (not shown). In the illustrated example, the rack 21 moves linearly along the X direction by the driving force of the driving source, thereby opening and closing the door attached to the rack 21.

[0023] A rail 22 extending along the X direction is fixed to the car body. The rail 22 is provided above the boarding / alighting entrance 9.

[0024] The door 10 includes a slider 11 that is connected to a connecting member (not shown) and moves along a rail 22, a door leaf 12, and door hangers 13A, 13B that are attached to the upper part of the door leaf 12 and fixed to the slider 11. In the example shown in the figure, the door hangers 13A, 13B are composed of a first hanger 13A that is attached to a portion of the upper end of the door leaf 12 on the leading edge side, and a second hanger 13B that is attached to a portion of the upper end of the door leaf 12 on the trailing edge side. Note that the configuration of the door hangers 13A, 13B is not limited to the above and can be changed according to design specifications.

[0025] For example, the door 10 moves from the fully closed position shown in Fig. 1 to the fully open position as a result of a driving force from a driving source being transmitted to the rack 21 and the slider 11 connected to the rack 21 via a connecting member moving along a rail 22. The fully open position means a position where the door opens (fully opens) the entrance / exit 9. In Fig. 1, the direction in which the +X side door 10 of the pair of doors 10 closes is indicated as the closing direction by the arrow Vc.

[0026] The door drive system is not limited to the so-called rack-and-pinion system in which the door opening / closing device 20 is equipped with the above-mentioned rack 21 and pinion. For example, the door drive system may be a so-called belt system in which a belt connected to the door is stretched over a driving pulley and a driven pulley, and the door is opened and closed by moving (circulating) the belt by the rotational drive of the driving pulley. For example, the door drive system may be a so-called screw system in which a screw shaft corresponding to a bolt is rotated by a motor to open and close a door attached to a ball nut corresponding to a nut. For example, the door drive system can be changed according to the design specifications.

[0027] <Vehicle door lock device> Fig. 2 is a perspective view of the vehicle door locking device 2 of the embodiment in a locked state. Fig. 3 is a front view of the vehicle door locking device 2 of the embodiment in a locked state. Fig. 4 is a perspective view of the vehicle door locking device 2 of the embodiment in an unlocked state. Fig. 5 is a front view of the vehicle door locking device 2 of the embodiment in an unlocked state. 2 to 5, the vehicle door locking device 2 includes a moving body 30 that moves in an opening / closing direction to open and close the entrance 9 of the vehicle together with a door 10 that opens and closes the entrance 9, a housing part 41 fixed to the body of the vehicle, a first shaft part 42 that can move back and forth in one direction between the inside and the outside of the housing part 41, and a coil 43 that drives the first shaft part 42 by electromagnetic force, a second shaft part 50 that engages with the first shaft part 42 in the moving direction in one direction and moves between a locked position where the door 10 is fully closed and engages with the moving body 30 when the first shaft part 42 moves to the outside of the housing part 41 to lock the door 10, and an unlocked position where the door 10 does not engage with the moving body 30 when the first shaft part 42 moves to the inside of the housing part 41, and a second shaft support part 60 that is fixed to the vehicle body and supports the second shaft part 50 movably along one direction.

[0028] <Mobile object> The movable body 30 comprises a bracket 31 connected to the upper end of the door leaf 12 and moving along the rail 22, an adjustment mechanism 32 attached so as to be adjustable in its position in the X direction relative to the bracket 31, a first protrusion 33 connected to a portion of the adjustment mechanism 32 that protrudes upward and protrudes in the +Y direction, and a second protrusion 34 connected to a portion of the adjustment mechanism 32 different from the position where the first protrusion 33 is located and has a portion that protrudes in the +Z direction.

[0029] <Actuator> For example, the actuator 40 is a solenoid that moves a plunger by electromagnetic force. A housing 41 of the actuator 40 houses a part of a first shaft 42 and a coil 43. In the example shown in the figure, the housing 41 is formed in a rectangular box shape. The shape of the housing 41 is not limited to the above and can be changed according to design specifications.

[0030] For example, the first shaft portion 42 is a plunger (movable iron core) of a solenoid. The first shaft portion 42 can move back and forth between the inside and outside of the housing portion 41 in a direction along the vertical direction (one example of one direction). For example, when a current flows through the coil 43, the first shaft portion 42 (movable iron core) is attracted to the fixed iron core of the solenoid. In this case, the first shaft portion 42 moves vertically upward from the outside to the inside of the housing portion 41. On the other hand, when the current flowing through the coil 43 is interrupted, the attraction force disappears. In this case, the first shaft portion 42 moves vertically downward from the inside to the outside of the housing portion 41.

[0031] <Second shaft part> The second shaft 50 moves to the locked position when the first shaft 42 moves to the outside of the housing 41. For example, at the locked position, the second shaft 50 comes into contact with a portion of the first protrusion 33 of the movable body 30 on the +Y end side. As a result, at the locked position, the second shaft 50 engages with the movable body 30 at the fully closed position of the door 10, thereby locking the door 10 (see FIGS. 2 and 3).

[0032] In addition, in the locked position, the second shaft portion 50 is not limited to being in contact with the portion of the movable body 30 on the +Y end side of the first protrusion 33, and may be non-contacting. For example, in the locked position, the second shaft portion 50 may be in close proximity to the portion of the movable body 30 on the +Y end side of the first protrusion 33. For example, the manner in which the second shaft portion 50 engages with the movable body 30 in the locked position can be changed according to design specifications.

[0033] The second shaft 50 moves to the unlocked position when the first shaft 42 moves inside the housing 41. For example, at the unlocked position, the lower end of the second shaft 50 is disposed above the +Y end side of the first protrusion 33 of the moving body 30. As a result, at the unlocked position, the second shaft 50 does not engage with the moving body 30, and the door 10 is unlocked (see FIGS. 4 and 5).

[0034] For example, the vehicle door system 1 may include a door close switch (not shown) that detects that the door 10 has been closed to a preset closed position. For example, the door close switch is configured to be turned on when the door 10 moves to a preset closed position. For example, the door close switch may be configured to be turned on when the door 10 is in a fully closed position. For example, when the door close switch is turned on, the door close switch outputs a signal. For example, the output signal is used to notify the driver's cab, etc.

[0035] For example, the vehicle door system 1 may include a lock switch (not shown) that outputs a lock signal indicating that the door 10 is locked when the lock switch is turned on. For example, the lock switch may be connected to the second shaft portion 50. For example, the lock switch may be configured to be turned on when the second shaft portion 50 is located in the locked position.

[0036] The second shaft portion 50 further includes a protrusion 51 extending along the radial direction of the second shaft portion 50. The protrusion 51 extends from an upper end side portion of the second shaft portion 50 toward the -X direction. In the example shown in the figure, a roller 52 is provided at the tip of the protrusion 51. For example, the roller 52 rolls along the outer surface (surface) of the limiting wall 73 when the rotating body portion 70 rotates.

[0037] <Second axis support part> Fig. 6 is a perspective view of an engagement portion between the first shaft portion 42 and the second shaft portion 50 in the embodiment. Fig. 7 is a perspective view including a cross section of the second shaft support portion 60 and the shaft support portions 80A and 80B in the embodiment. Note that the elastic portion 44 is omitted from Figs. 6 and 7. 6 and 7, for example, the second shaft support part 60 is fixed to the vehicle body by a fastening member such as a bolt. The second shaft support part 60 supports the second shaft part 50 movably along the vertical direction. The second shaft support part 60 includes a second bearing part 61 that rotatably supports a lower part of the second shaft part 50, and a second bearing fixing part 62 that extends from a part on the +Y end side of the second bearing part 61 on both sides in the X direction.

[0038] The second bearing portion 61 includes a cylindrical bush 63 that fits along the lower portion of the second shaft portion 50, and a cylindrical holder 64 that surrounds the bush 63. In the example shown in the figure, the bush 63 includes an annular portion that is disposed along the upper surface of the holder 64, and a cylindrical portion that extends vertically downward from the radial inner end of the annular portion. Note that the configuration of the bush 63 is not limited to the above, and can be changed according to design specifications.

[0039] The second bearing fixing portion 62 extends on both sides in the X direction from the +Y end side of the holder 64. In the example shown in the figure, the second bearing fixing portion 62 is fixed by two fastening members on each side (four in total) on both sides in the X direction of the holder 64. Note that the fixing mode of the second bearing fixing portion 62 (the number and arrangement of fastening members, etc.) is not limited to the above and can be changed according to design specifications.

[0040] <Fitting holes and pins> A fitting hole 55 extending along the opening / closing direction is formed in one of the first shaft portion 42 and the second shaft portion 50. The other of the first shaft portion 42 and the second shaft portion 50 includes a pin portion 45 that fits into the fitting hole 55. In this embodiment, the second shaft portion 50 includes a fitting hole 55 extending along the opening / closing direction. The first shaft portion 42 includes a pin portion 45 that fits into the fitting hole 55.

[0041] In the illustrated example, the lower part of the first shaft portion 42 includes a pair of pin support walls 46 spaced apart from each other in the Y direction. Each pin support wall 46 is formed with a pin fixing hole 47 penetrating in the Y direction so that the pin portion 45 can be attached. In the illustrated example, the pin portion 45 is a spring pin. The spring pin has a C-shape when viewed from the Y direction. For example, the spring pin is inserted into the pin fixing hole 47 of each pin support wall 46 in a contracted state, and then the spring pin is opened to fix the spring pin to each pin support wall 46. This allows the pin portion 45 to be attached to each pin support wall 46.

[0042] In the illustrated example, the upper part of the second shaft part 50 includes a plate-like part 56 formed in a plate shape along the XZ plane. The Y-direction outer surface of the plate-like part 56 is formed in a flat shape along the Y-direction inner surface of each pin support wall 46. The fitting hole 55 has an elongated hole shape that penetrates the upper end part of the plate-like part 56 in the Y direction and extends in the X direction. The maximum length of the fitting hole 55 in the X direction is longer than the outer diameter of the fixed pin part 45 (for example, the outermost diameter when the spring pin is opened). The maximum length of the fitting hole 55 in the Z direction is approximately the same as the outer diameter of the fixed pin part 45. For example, the dimensions of the fitting hole 55 and the pin part 45 may be set to a dimension such that the pin part 45 fitted in the fitting hole 55 can move smoothly in the X direction along the wall part that forms the fitting hole 55.

[0043] For example, the first shaft portion 42 and the second shaft portion 50 are connected (engaged, linked) in the following manner. First, the plate-shaped portion 56 of the second shaft portion 50 is inserted between the pair of pin support walls 46 of the first shaft portion 42. Next, the pin fixing holes 47 of each pin support wall 46 and the fitting holes 55 of the plate-shaped portion 56 are arranged so as to overlap each other when viewed from the Y direction. Next, the spring pin is inserted into each pin fixing hole 47 and the fitting hole 55 in a contracted state, and then the spring pin is opened to fix the spring pin to each pin support wall 46. This allows the pin portion 45 that fits into the fitting hole 55 to be attached to each pin support wall 46. Through the above procedure, the first shaft portion 42 and the second shaft portion 50 can be connected.

[0044] In this embodiment, the gaps X1A, X1B in the opening / closing direction between the wall portion forming the fitting hole 55 and the pin portion 45 are larger than the gap X2 in the opening / closing direction between the second shaft portion 50 and the second shaft support portion 60 (X1A, X1B>X2). The gaps X1A, X1B in the opening / closing direction between the wall portion forming the fitting hole 55 and the pin portion 45 refer to the minimum distance in the X direction between the X-direction outer end of the inner peripheral edge of the wall portion forming the fitting hole 55 and the X-direction outer end of the outline of the pin portion 45. The gap X2 in the opening / closing direction between the second shaft portion 50 and the second shaft support portion 60 refers to the minimum distance in the X direction between the X-direction outer end of the outer peripheral edge of the lower part of the second shaft portion 50 and the X-direction inner end of the inner peripheral edge of the second shaft support portion 60.

[0045] The gaps X1A, X2A in the opening / closing direction between the wall portion forming the fitting hole 55 and the pin portion 45 are one example of a gap in the opening / closing direction of the engagement portion between the first shaft portion 42 and the second shaft portion 50. That is, in this embodiment, the gaps X1A, X1B in the opening / closing direction of the engagement portion between the first shaft portion 42 and the second shaft portion 50 are larger than the gap X2 in the opening / closing direction between the second shaft portion 50 and the second shaft support portion 60. In other words, in this embodiment, the first shaft portion 42 and the second shaft portion 50 are connected to be relatively movable along the opening / closing direction.

[0046] In the illustrated example, the pin portion 45 is a spring pin, and the fitting hole 55 has an elongated hole shape extending in the X direction, but the present invention is not limited to this. For example, the pin portion 45 may be a shaft portion of a bolt or the like, or a convex portion. For example, the fitting hole 55 may be a concave portion into which the convex portion of the pin portion 45 fits. For example, the aspects of the fitting hole 55 and the pin portion 45 can be changed according to design specifications.

[0047] <Elastic part> 2 and 3, the actuator 40 further includes an elastic portion 44 that presses the first shaft portion 42 toward the outside of the housing portion 41. For example, the elastic portion 44 is a coil spring (compression spring). Note that the elastic portion 44 is not limited to the above, and may be configured to include a leaf spring, a disc spring, or the like. For example, the configuration of the elastic portion 44 can be changed according to design specifications.

[0048] The elastic portion 44 is disposed between the lower surface of the housing portion 41 and a part of the upper surface of the second shaft portion 50 (specifically, a surface extending from the lower end of the plate-shaped portion 56 along the XY plane). The elastic portion 44 applies an elastic force to the second shaft portion 50 so that the second shaft portion 50 is maintained in the locked position. Specifically, when the first shaft portion 42 moves to the outside of the housing portion 41 and the second shaft portion 50 engages with the movable body 30 and is positioned in the locked position when the door 10 is in the fully closed position, the elastic portion 44 presses the second shaft portion 50 vertically downward so that the second shaft portion 50 is maintained in the locked position.

[0049] 4 and 5, the actuator 40 moves the second shaft portion 50 connected to the first shaft portion 42 from the locked position to the unlocked position by using an electromagnetic force to pull up the first shaft portion 42 against the pressing force (elastic force) of the elastic portion 44. Note that a pressing force from the elastic portion 44 is constantly applied to the second shaft portion 50. Therefore, in a state where no pulling force is applied to the second shaft portion 50, the second shaft portion 50 is held in the locked position.

[0050] <Rotating body part> 2 and 3, the vehicle door lock device 2 further includes a rotating body 70 that is rotatable about an axis parallel to the vertical direction. The rotating body 70 rotates in contact with the moving body 30 at a position different from the position where the second shaft 50 engages with the moving body 30 when the door 10 is in the fully closed position. The rotating body 70 holds the second shaft 50, which is pulled up by electromagnetic force, in the unlocked position.

[0051] The rotating body portion 70 includes a shaft 71 that extends along an axis parallel to the vertical direction and is rotatable around this axis, a striker 72 that extends radially of the shaft 71 and contacts the movable body 30 when the door is in the fully closed position, and a limiting wall 73 formed on the shaft 71 and contacts the convex portion 51 to limit the movement of the second shaft portion 50 from the unlocked position to the locked position.

[0052] For example, when the door 10 is in the fully closed position, the striker 72 comes into contact with an upper end portion of the second protrusion 34 of the moving body 30. In other words, when the door 10 is in the locked position, the striker 72 comes into contact with an upper end portion of the second protrusion 34 of the moving body 30. As a result, when the door 10 is in the fully closed position, the second shaft portion 50 engages with the moving body 30, and the striker 72 comes into contact with the moving body 30, thereby keeping the door 10 locked.

[0053] In addition, at the locked position, the striker 72 is not limited to being in contact with the upper end portion of the second protrusion 34 of the movable body 30, and may be out of contact. For example, at the locked position, the second shaft portion 50 may be close to the upper end portion of the second protrusion 34 of the movable body 30. For example, the manner in which the striker 72 contacts the movable body 30 at the locked position can be changed according to design specifications.

[0054] The limiting wall 73 comes into contact with the convex portion 51 of the second shaft portion 50 as a result of the striker 72 coming into contact with the movable body 30 and rotating together with the shaft 71. The limiting wall 73 comes into contact with the convex portion 51 while rotating together with the shaft 71, and moves from a limiting position (position shown in FIGS. 4 and 5) that limits the movement of the second shaft portion 50 to the locked position to a non-limiting position (position shown in FIGS. 2 and 3) that does not limit the movement of the second shaft portion 50 to the locked position.

[0055] 4 and 5, the limiting wall 73 has a part of the upper surface of the rotating body part 70 (specifically, a surface extending along the XY plane from a part on the vertical center side of the shaft 71 to a position facing a part on the tip side of the convex part 51) in the limiting position. Referring to Figs. 2 and 3, the limiting wall 73 has a part of the side surface of the rotating body part 70 (specifically, a surface extending along a plane including the radial direction and Z direction of the shaft 71 so as to be connected to one edge part of the upper surface of the part of the rotating body part 70) in the non-limiting position.

[0056] In this embodiment, a roller 52 is provided at the tip of the convex portion 51. Therefore, when the limiting wall 73 moves from the limiting position to the non-limiting position while rotating together with the shaft 71, smooth rotation can be obtained. For example, the roller 52 rolls smoothly along the outer surface of the limiting wall 73 (specifically, a part of the upper surface of the rotating body portion 70 and a part of the side surface of the rotating body portion 70) when the rotating body portion 70 rotates.

[0057] In the illustrated example, the outer surface of the limiting wall 73 on which the rollers 52 roll is formed in an L-shape when viewed from the radial direction of the shaft 71. For example, an L-shaped groove may be formed in the rotating body portion 70 so as to follow the limiting wall 73. The outer surface of the limiting wall 73 on which the rollers 52 roll may be formed to include a portion along a horizontal plane and a portion along a vertical plane when viewed from the radial direction of the shaft 71. For example, the outer surface of the limiting wall 73 on which the rollers 52 roll is not limited to the above and can be changed according to design specifications.

[0058] <Shaft support> The rotating body 70 further includes shaft support parts 80A, 80B that are fixed to the vehicle body and rotatably support the shaft 71. For example, the shaft support parts 80A, 80B are fixed to the vehicle body by fastening members such as bolts. The shaft support parts 80A, 80B rotatably support the shaft 71 about an axis parallel to the vertical direction. The shaft support parts 80A, 80B include a first support part 80A that rotatably supports an upper end part of the shaft 71, and a second support part 80B that rotatably supports a lower end part of the shaft 71. The configuration of the shaft support parts 80A, 80B is not limited to the above and can be changed according to design specifications.

[0059] Also referring to FIG. 7, shaft support portions 80A and 80B include a shaft bearing portion 81 that rotatably supports shaft 71, and a shaft bearing fixing portion 82 that extends from the +Y end side of shaft bearing portion 81 on both sides in the X direction.

[0060] The shaft bearing portion 81 includes a cylindrical bush 83 that fits along the shaft 71, and a holder 84 that is disposed vertically outward of the bush 83 and surrounds the shaft 71. In the example shown in the figure, the bush 83 includes an annular portion that is disposed along the vertically inner surface of the holder 84, and a cylindrical portion that extends vertically inward from a radially inner end of the annular portion. Note that the configuration of the bush 83 is not limited to the above, and can be changed according to design specifications.

[0061] The shaft bearing fixing part 82 extends on both sides in the X direction from the +Y end side of the holder 84. In the example shown in the figure, the shaft bearing fixing part 82 is fixed on both sides in the X direction of the holder 84 by one fastening member on each side (two in total). Note that the fixing mode of the shaft bearing fixing part 82 (the number and arrangement of fastening members, etc.) is not limited to the above and can be changed according to the design specifications.

[0062] In this embodiment, the gap S1 between the shaft supports 80A, 80B and the shaft 71 is larger than the gap S2 between the second shaft support 60 and the second shaft section 50 (S1>S2). The gap S1 between the shaft supports 80A, 80B and the shaft 71 is the gap between the inner peripheral surface of the holder 84 constituting the shaft supports 80A, 80B and the outer peripheral surface of the shaft 71, and means the minimum gap in the radial direction of the shaft 71. The gap S2 between the second shaft support 60 and the second shaft section 50 is the gap between the inner peripheral surface of the bush 63 constituting the second shaft support 60 and the outer peripheral surface of the lower part of the second shaft section 50, and means the minimum gap in the radial direction of the second shaft section 50.

[0063] <Second elastic part> The rotating body 70 further includes a second elastic portion 74 that presses the shaft 71 in the direction opposite to the direction of the arrow R in Fig. 8. For example, the second elastic portion 74 is a torsion spring (torsion coil spring). Note that the second elastic portion 74 is not limited to the above, and may be configured to include a leaf spring, a disc spring, or the like. For example, the configuration of the second elastic portion 74 can be changed according to design specifications.

[0064] The second elastic part 74 is disposed between the lower surface of the first support part 80A and a part of the upper surface of the rotating body part 70 (specifically, a surface extending along the XY plane in a vertical wall part extending vertically upward from the radially inner end of the upper surface of the limiting wall 73). The second elastic part 74 is wound around the shaft 71. One end of the second elastic part 74 is attached to the holder 84 of the first support part 80A. The other end of the second elastic part 74 is attached to the vertical wall part.

[0065] <Fixed plate> Also referring to FIG. 7, the vehicle door lock device 2 further includes a fixing plate 90 that is fixed to the vehicle body and fixes the housing portion 41, the second shaft support portion 60, and the shaft support portions 80A and 80B. For example, the fixing plate 90 is fixed to the vehicle body by a fastening member such as a bolt. In the example shown in the figure, the fixing plate 90 is formed in a rectangular plate shape along the XZ plane. Note that the shape of the fixing plate 90 is not limited to the above and can be changed according to design specifications.

[0066] <Locked / unlocked status> Fig. 8 is a perspective view showing a locked state when the solenoid of the embodiment is demagnetized. Fig. 9 is a perspective view showing an unlocked state when the solenoid of the embodiment is excited. Fig. 10 is a perspective view showing a state (unlocked state) in which the limiting wall 73 of the rotating body 70 of the embodiment contacts the convex portion 51 (roller 52 in the illustrated example) of the second shaft portion 50 and limits the movement to the locked position. An example of the locking and unlocking operations will be described below with reference to Figs. 8 to 10.

[0067] <An example of locking action> For example, when the door 10 moves to the fully closed position by the closing operation, the second protrusion 34 of the moving body 30, which moves in conjunction with the door 10, comes into contact with the striker 72 of the rotating body 70. This causes the shaft 71 to rotate in the direction of arrow R in Fig. 10 about an axis parallel to the vertical direction. As the shaft 71 rotates, the limiting wall 73 rotates in the direction of arrow R in Fig. 9. Then, the roller 52 provided at the tip side of the protrusion 51 moves along the outer surface of the limiting wall 73.

[0068] In FIG. 8, since the solenoid is demagnetized, the first shaft 42 moves to the outside of the housing 41 due to the pressing force (elastic force) of the elastic portion 44. At this time, the first shaft 42 and the second shaft 50 move vertically downward together. Then, the second shaft 50 is in a state of protruding vertically downward. When the first shaft 42 moves to the outside of the housing 41, the second shaft 50 moves to the locked position. For example, at the locked position, the second shaft 50 comes into contact with the first protruding portion 33 of the moving body 30. As a result, at the locked position, the second shaft 50 engages with the moving body 30 at the fully closed position of the door 10, thereby locking the door 10 (see FIGS. 2 and 3).

[0069] <An example of unlocking action> For example, the solenoid is excited at the position shown in FIG. 8. For example, a voltage is applied to the actuator 40 to pull up the first shaft portion 42. The actuator 40 pulls up the first shaft portion 42 by electromagnetic force against the pressing force of the elastic portion 44. Then, the first shaft portion 42 moves into the housing portion 41. At this time, the first shaft portion 42 and the second shaft portion 50 move vertically upward together. Then, the protrusion portion 51 of the second shaft portion 50 is disposed at the position shown in FIG. 9.

[0070] Thereafter, as the door 10 opens, the second protrusion 34 of the movable body 30, which is linked to the door 10, separates from the striker 72 of the rotating body 70. Then, the elastic force of the second elastic portion 74 causes the shaft 71 to rotate in the direction opposite to the direction of arrow R in Fig. 9. Then, the roller 52 provided at the tip side portion of the protrusion 51 moves along the upper surface of the limiting wall 73.

[0071] The second shaft 50 moves to the unlocked position when the first shaft 42 moves inside the housing 41. For example, at the unlocked position, the lower end of the second shaft 50 is positioned above the first protrusion 33. As a result, at the unlocked position, the second shaft 50 does not engage with the movable body 30, and the door 10 is unlocked (see FIGS. 4 and 5).

[0072] 10, the roller 52 provided on the convex portion 51 of the second shaft portion 50 is disposed on the upper surface of the limiting wall 73. As a result, the limiting wall 73 comes into contact with the roller 52 provided on the convex portion 51, and limits the movement of the second shaft portion 50 to the locked position.

[0073] In this embodiment, the convex portion 51 on which the roller 52 is provided cannot move vertically downward unless the second protrusion 34 contacts the striker 72 and rotates the rotating body portion 70. Therefore, the door can be locked more reliably when the door is in the fully closed position. In addition, since the rotating body portion 70 is configured to include a cylindrical shaft 71, the number of parts can be reduced and a holding structure can be realized with a simple combination. In addition, not only the second shaft support portion 60 but also the rotating body portion 70 has the function of receiving the load applied to the striker 72 to hold the door closed. Therefore, the number of elements that require strength is reduced, which contributes to reducing the weight of the entire device and the number of replacement parts.

[0074] <Action and effect> As described above, the vehicle door lock device 2 according to this embodiment includes: an actuator 40 including a movable body 30 that moves in the opening / closing direction to open and close the vehicle entrance 9 together with the door 10 that opens and closes the vehicle entrance 9; a housing portion 41 fixed to the body of the vehicle; a first shaft portion 42 that is capable of reciprocating in one direction between the inside and the outside of the housing portion 41; and a coil 43 that drives the first shaft portion 42 by electromagnetic force; a second shaft portion 50 that engages with the first shaft portion 42 in the moving direction in one direction and moves between a locking position where the door 10 is fully closed and engages with the movable body 30 when the first shaft portion 42 moves to the outside of the housing portion 41 to lock the door 10; and an unlocking position where the second shaft portion 42 does not engage with the movable body 30 when the first shaft portion 42 moves to the inside of the housing portion 41; and a second shaft support portion 60 that is fixed to the vehicle body and supports the second shaft portion 50 movably along one direction. Gaps X1A, X1B in the opening / closing direction of the engagement portion between the first shaft portion 42 and the second shaft portion 50 are larger than the gap X2 between the second shaft portion 50 and the second shaft support portion 60 in the opening / closing direction.

[0075] According to this configuration, when the first shaft portion 42 moves to the outside of the housing portion 41, the first shaft portion 42 and the second shaft portion 50 move together, and the second shaft portion 50 moves to the locking position. This causes the door 10 to be locked. At this time, an external force may be applied from the moving body 30 along the opening and closing direction of the door 10. Even in this case, the gaps X1A and X1B in the opening and closing direction of the engagement portion between the first shaft portion 42 and the second shaft portion 50 are larger than the gap X2 in the opening and closing direction between the second shaft portion 50 and the second shaft support portion 60, so that the load due to the external force is transmitted from the second shaft portion 50 to the second shaft support portion 60, and the load due to the external force is not transmitted to the first shaft portion 42. Therefore, it is possible to avoid the load being applied to the actuator 40, and it is possible to avoid the situation where the entire actuator 40 needs to be replaced. For example, if the actuator 40 is a solenoid that moves a plunger by electromagnetic force, it is possible to avoid having to replace the entire solenoid, including undamaged parts such as the coil 43 and drive circuit inside the solenoid.

[0076] In the vehicle door lock device 2 according to this embodiment, a fitting hole 55 extending along the opening / closing direction is formed in one of the first shaft portion 42 and the second shaft portion 50. The other of the first shaft portion 42 and the second shaft portion 50 includes a pin portion 45 that fits into the fitting hole 55. Gaps X1A, X1B in the opening / closing direction between the wall portion that forms the fitting hole 55 and the pin portion 45 are larger than the gap X2 in the opening / closing direction between the second shaft portion 50 and the second shaft support portion 60. According to this configuration, when the first shaft portion 42 moves to the outside of the housing portion 41, the wall portion forming the fitting hole 55 and the pin portion 45 come into contact with each other, and the first shaft portion 42 and the second shaft portion 50 move together. On the other hand, when an external force is applied from the moving body 30 along the opening / closing direction of the door 10, the second shaft portion 50 and the second shaft support portion 60 come into contact with each other before the wall portion forming the fitting hole 55 and the pin portion 45 come into contact with each other. Therefore, it is possible to concentrate the load due to the external force on the second shaft portion 50 and the second shaft support portion 60.

[0077] In the vehicle door lock device 2 according to this embodiment, the actuator 40 further includes an elastic portion 44 that presses the first shaft portion 42 toward the outside of the housing portion 41. The actuator 40 moves the second shaft portion 50 connected to the first shaft portion 42 from the locked position to the unlocked position by pulling up the first shaft portion 42 by electromagnetic force against the pressing force of the elastic portion 44. According to this configuration, the pressing force of the elastic portion 44 can hold the second shaft portion 50 in the locked position.

[0078] The vehicle door locking device 2 of this embodiment further includes a rotating body portion 70 that is rotatable around an axis parallel to one direction, rotates in contact with the moving body 30 at a position different from the position at which the second shaft portion 50 engages when the door 10 is in the fully closed position, and holds the second shaft portion 50 pulled up by electromagnetic force in the unlocked position. According to this configuration, there is no need to continue supplying power to the actuator 40 during unlocking, which contributes to power saving.

[0079] In the vehicle door lock device 2 according to this embodiment, the second shaft portion 50 further includes a protrusion 51 extending along the radial direction of the second shaft portion 50. The rotating body portion 70 includes a shaft 71 extending along an axis parallel to one direction and rotatable about the axis parallel to the one direction, a striker 72 extending in the radial direction of the shaft 71 and contacting the moving body 30 at the fully closed position of the door 10, and a limiting wall 73 formed on the shaft 71 and contacting the protrusion 51 to limit the movement of the second shaft portion 50 from the unlocked position to the locked position. The limiting wall 73 moves from a limiting position where the second shaft portion 50 comes into contact with the protrusion 51 to limit the movement of the second shaft portion 50 to the locked position to a non-limiting position where the movement of the second shaft portion 50 to the locked position is not limited by the striker 72 contacting the moving body 30 and rotating together with the shaft 71. According to this configuration, the limiting wall 73 of the rotating body portion 70 comes into contact with the convex portion 51 of the second shaft portion 50, thereby restricting the movement of the second shaft portion 50 from the unlocked position to the locked position, so there is no need to continue supplying power to the actuator 40 during unlocking.

[0080] In the vehicle door lock device 2 according to this embodiment, the rotating body 70 further includes shaft support portions 80A, 80B that are fixed to a vehicle body and rotatably support the shaft 71. A gap S1 between the shaft support portions 80A, 80B and the shaft 71 is larger than a gap S2 between the second shaft support portion 60 and the second shaft portion 50. According to this configuration, the load due to an external force can be concentrated on the second shaft portion 50 and the second shaft support portion 60, thereby reducing the frequency of replacing the shaft 71. In addition, the accuracy of mounting the rotating body portion 70 to the second shaft portion 50 can be reduced, thereby reducing assembly costs.

[0081] The vehicle door lock device 2 according to this embodiment further includes a fixing plate 90 that is fixed to the vehicle body and that fixes the housing portion 41, the second shaft support portion 60, and the shaft support portions 80A and 80B. With this configuration, it is easier to maintain the parallelism of the axes of the first shaft portion 42, the second shaft portion 50 and the shaft 71 compared to when the housing portion 41, the second shaft support portion 60 and the shaft support portions 80A, 80B are fixed to different members.

[0082] In the vehicle door lock device 2 according to this embodiment, the one direction is a direction along the vertical direction. For example, when the one direction is a horizontal direction, the first shaft portion 42 comes into contact with the housing portion 41 due to gravity, which is likely to cause wear inside the housing portion 41. In contrast, with the present configuration, the first shaft portion 42 does not come into contact with the housing portion 41 due to gravity, so wear inside the housing portion 41 can be further prevented.

[0083] The vehicle door system 1 according to this embodiment includes a door 10 for opening and closing a vehicle entrance 9, a movable body 30 fixed to the door 10 and moving in an opening / closing direction to open and close the entrance 9 together with the door 10, a housing part 41 fixed to the body of the vehicle, a first shaft part 42 capable of reciprocating in one direction between the inside and the outside of the housing part 41, and a coil 43 for driving the first shaft part 42 by electromagnetic force, an actuator 40 connected in one direction together with the first shaft part 42 and moving between a locked position where the door 10 is fully closed when the first shaft part 42 moves to the outside of the housing part 41 and engages with the movable body 30 to lock the door 10, and an unlocked position where the door 10 does not engage with the movable body 30 when the first shaft part 42 moves to the inside of the housing part 41, and a second shaft support part 60 fixed to the vehicle body and supporting the second shaft part 50 movably along one direction. The first shaft portion 42 and the second shaft portion 50 are connected to be capable of relative movement in the opening and closing direction.

[0084] According to this configuration, when the first shaft portion 42 moves to the outside of the housing portion 41, the first shaft portion 42 and the second shaft portion 50 move together, and the second shaft portion 50 moves to the locked position. This causes the door 10 to be locked. At this time, an external force may be applied from the moving body 30 along the opening and closing direction of the door 10. Even in this case, the first shaft portion 42 and the second shaft portion 50 are connected to be relatively movable along the opening and closing direction, so that the load due to the external force is not transmitted to the first shaft portion 42. This makes it possible to avoid a load being applied to the actuator 40, and to avoid a situation in which the entire actuator 40 needs to be replaced.

[0085] <Modification> In the above-described embodiment, the actuator is a solenoid that moves the plunger by electromagnetic force, but the present invention is not limited to this. For example, the actuator may include a motor. For example, the actuator may include a conversion mechanism that converts the rotation of the motor into reciprocating movement in one direction. For example, the configuration of the actuator may be changed according to the design specifications.

[0086] In the above-described embodiment, an example has been described in which the second shaft portion is formed with a fitting hole extending along the opening / closing direction, and the first shaft portion is provided with a pin portion that fits into the fitting hole, but this is not limited thereto. For example, the first shaft portion may be formed with a fitting hole extending along the opening / closing direction, and the second shaft portion may be provided with a pin portion that fits into the fitting hole. For example, one of the first shaft portion and the second shaft portion may be formed with a fitting hole extending along the opening / closing direction, and the other of the first shaft portion and the second shaft portion may be provided with a pin portion that fits into the fitting hole. For example, the form of the fitting hole and the form of the pin portion can be changed according to design specifications.

[0087] In the above-described embodiment, an example has been described in which the gap between the wall portion and the pin portion that form the fitting hole in the opening / closing direction is larger than the gap between the second shaft portion and the second shaft support portion in the opening / closing direction, but this is not limited to this. For example, the gap between the wall portion and the pin portion that form the fitting hole in the opening / closing direction may be equal to or smaller than the gap between the second shaft portion and the second shaft support portion in the opening / closing direction. For example, the size relationship between the gap between the wall portion and the pin portion that form the fitting hole in the opening / closing direction and the gap between the second shaft portion and the second shaft support portion in the opening / closing direction can be changed according to design specifications.

[0088] In the above-described embodiment, the actuator further includes an elastic portion that presses the first shaft portion toward the outside of the housing portion, and the actuator moves the second shaft portion connected to the first shaft portion from the locked position to the unlocked position by pulling up the first shaft portion by electromagnetic force against the pressing force of the elastic portion, but the present invention is not limited to this. For example, the actuator does not need to include an elastic portion. For example, the actuator may be configured so that the first shaft portion can reciprocate in one direction between the inside and outside of the housing portion. For example, the installation mode of the elastic portion can be changed according to the design specifications.

[0089] In the above-described embodiment, an example has been described in which the locking device further includes a rotating body portion that is rotatable about an axis parallel to one direction, that rotates by contacting with the moving body at a position different from the position where the second shaft portion engages with the moving body when the door is in the fully closed position, and that holds the second shaft portion pulled up by electromagnetic force in the unlocked position. However, the present invention is not limited to this. For example, the locking device for a vehicle door does not need to include a rotating body portion. For example, the second shaft portion may be held in the unlocked position by electromagnetic force by continuing to supply power to the actuator during unlocking. For example, the installation mode of the rotating body portion can be changed according to the design specifications.

[0090] In the above-described embodiment, the second shaft further includes a protrusion extending along the radial direction of the second shaft, and the rotating body includes a shaft extending along an axis parallel to one direction and rotatable about the axis parallel to the one direction, a striker extending in the radial direction of the shaft and contacting the moving body when the door is in the fully closed position, and a limiting wall formed on the shaft and contacting the protrusion to limit the movement of the second shaft from the unlocked position to the locked position, and the limiting wall moves from a limiting position where the second shaft comes into contact with the protrusion to limit the movement of the second shaft to the locked position to a non-limiting position where the movement of the second shaft to the locked position is not limited by the above example. For example, the second shaft may not include a protrusion. For example, the rotating body may not include a limiting wall. For example, the rotating body may include a protrusion extending along the radial direction of the rotating body, and the second shaft may include a limiting wall that contacts the protrusion of the rotating body to limit the second shaft from moving from the unlocked position to the locked position. For example, the contact relationship (convex-concave relationship) between the protrusion and the limiting wall between the second shaft and the rotating body may be the opposite to that described above. For example, the installation mode of the protrusion and the limiting wall may be changed according to the design specifications.

[0091] In the above-described embodiment, the rotating body further includes a shaft support portion that is fixed to the vehicle body and rotatably supports the shaft, but the present invention is not limited to this. For example, the rotating body does not need to include a shaft support portion. For example, the rotating body may be configured such that the shaft is fixed to the vehicle body and the striker is rotatable around the shaft. For example, the installation mode of the shaft support portion can be changed according to the design specifications.

[0092] In the above-described embodiment, an example has been described in which the gap between the shaft support portion and the shaft is larger than the gap between the second shaft support portion and the second shaft portion, but this is not limiting. For example, the gap between the shaft support portion and the shaft may be equal to or smaller than the gap between the second shaft support portion and the second shaft portion. For example, the size relationship between the gap between the shaft support portion and the shaft and the gap between the second shaft support portion and the second shaft portion can be changed according to design specifications.

[0093] In the above-described embodiment, an example is described in which a fixing plate is further provided that is fixed to the vehicle body and fixes the housing part, the second shaft support part, and the shaft support part, but this is not limited thereto. For example, the housing part, the second shaft support part, and the shaft support part may be fixed to different members. For example, the manner in which each of the housing part, the second shaft support part, and the shaft support part is fixed can be changed according to the design specifications.

[0094] In the above-described embodiment, the one direction is described as a direction along the vertical direction, but the present invention is not limited to this. For example, the one direction may be a direction along the horizontal direction. For example, the one direction may be a direction intersecting both the vertical direction and the horizontal direction. For example, the aspect of the one direction can be changed according to the design specifications.

[0095] <Other Modifications> The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0096] In the above-mentioned embodiment, the moving body is described as having a bracket connected to the upper end of the door leaf and moving along a rail, an adjustment mechanism attached to the bracket so as to be adjustable in the X-direction position, a first protrusion connected to a portion of the adjustment mechanism that protrudes upward and extends along the Y-direction, and a second protrusion connected to a portion of the adjustment mechanism different from the position where the first protrusion is disposed and having a portion that extends along the Z-direction, but the present invention is not limited to this. For example, the moving body may not have a bracket or an adjustment mechanism. For example, if the locking device of the vehicle door does not have a rotating body, the moving body may not have the second protrusion. For example, the moving body may be configured to include a hanger in which a latch hole is formed. For example, the configuration of the moving body may be changed according to the design specifications.

[0097] In the above embodiment, the rotating body includes a striker that extends in the radial direction of the shaft and contacts the moving body when the door is in the fully closed position. However, the present invention is not limited to this. For example, the rotating body may include a cam instead of the striker. For example, the configuration of the rotating body may be changed according to the design specifications.

[0098] In the above-described embodiment, an example has been described in which the vehicle door system includes a pair of doors that open and close the entrance of a railroad vehicle, but the present invention is not limited to this. For example, the vehicle door system may be provided in a vehicle other than a railroad vehicle. For example, the vehicle door system may include a door that opens and closes a railroad vehicle.

[0099] In addition, the components in the above-described embodiment may be replaced with well-known components without departing from the spirit and scope of the present invention. Also, the above-described modified examples may be combined. Among the embodiments disclosed in this specification, those that are composed of multiple objects may be integrated, and conversely, those that are composed of one object may be divided into multiple objects. Regardless of whether they are integrated or not, it is sufficient that they are configured to achieve the object of the invention. Among the embodiments disclosed in this specification, those in which multiple functions are provided in a distributed manner may have some or all of the multiple functions integrated together, and conversely, those in which multiple functions are provided in a distributed manner may have some or all of the multiple functions integrated together. Regardless of whether the functions are integrated or distributed, it is sufficient that the configuration is such that the object of the invention can be achieved. [Explanation of symbols]

[0100] 1...vehicle door system, 2...vehicle door lock device, 9...entrance, 10...door, 30...moving body, 40...actuator, 41...housing portion, 42...first shaft portion, 43...coil, 44...elastic portion, 45...pin portion, 50...second shaft portion, 51...projection portion, 55...fitting hole, second shaft support portion, 70...rotating body portion, 71...shaft, 72...striker, 73...limiting wall, 80A, 80B...shaft support portion, 90...fixed plate, X1A, X1B...gap in opening / closing direction between wall portion forming fitting hole and pin portion (gap in opening / closing direction of engagement portion between first shaft portion and second shaft portion), X2...gap in opening / closing direction between second shaft portion and second shaft support portion, S1...gap between shaft support portion and shaft, S2...gap between second shaft support portion and second shaft portion

Claims

1. a moving body that moves in an opening / closing direction to open and close the boarding / alighting door of a vehicle together with a door that opens and closes the boarding / alighting door; an actuator including a housing portion fixed to a body of the vehicle, a first shaft portion capable of reciprocating in one direction between an inside and an outside of the housing portion, and a coil that drives the first shaft portion by an electromagnetic force; a second shaft portion that engages with the first shaft portion in the moving direction in the one direction and moves between a locked position where the second shaft portion engages with the movable body at a fully closed position of the door when the first shaft portion moves to the outside of the housing portion to lock the door and an unlocked position where the second shaft portion does not engage with the movable body when the first shaft portion moves to the inside of the housing portion; a second shaft support portion that is fixed to the vehicle body and supports the second shaft portion so as to be movable along the one direction, a gap in the opening / closing direction of an engagement portion between the first shaft portion and the second shaft portion is larger than a gap in the opening / closing direction between the second shaft portion and the second shaft support portion; A vehicle door locking device.

2. A fitting hole extending along the opening / closing direction is formed in one of the first shaft portion and the second shaft portion, the other of the first shaft portion and the second shaft portion includes a pin portion that fits into the fitting hole, a gap between a wall portion forming the fitting hole and the pin portion in the opening / closing direction is larger than a gap between the second shaft portion and the second shaft support portion in the opening / closing direction.

2. A vehicle door lock device according to claim 1.

3. The actuator further includes an elastic portion that presses the first shaft portion toward an outside of the housing portion, The actuator moves the second shaft portion connected to the first shaft portion from the locked position to the unlocked position by pulling up the first shaft portion by the electromagnetic force against the pressing force of the elastic portion.

3. A vehicle door lock device according to claim 1 or 2.

4. a rotating body portion that is rotatable about an axis parallel to the one direction, that rotates in contact with the moving body at a position different from a position where the second shaft portion engages with the moving body when the door is in a fully closed position, and that holds the second shaft portion pulled up by the electromagnetic force in the unlocked position; 4. A vehicle door lock device according to claim 3.

5. The second shaft portion further includes a protrusion extending along a radial direction of the second shaft portion, The rotating body portion is a shaft extending along an axis parallel to the one direction and rotatable about an axis parallel to the one direction; a striker extending in a radial direction of the shaft and contacting the movable body when the door is in a fully closed position; a limiting wall formed on the shaft and contacting the protrusion to limit movement of the second shaft portion from the unlocked position to the locked position, When the striker comes into contact with the movable body and rotates together with the shaft, the limiting wall moves from a limiting position where the limiting wall comes into contact with the convex portion and limits the movement of the second shaft portion to the locked position to a non-limiting position where the limiting wall does not limit the movement of the second shaft portion to the locked position.

5. A vehicle door lock device according to claim 4.

6. The rotating body portion further includes a shaft support portion that is fixed to the vehicle body and rotatably supports the shaft, a gap between the shaft support portion and the shaft is larger than a gap between the second shaft support portion and the second shaft portion; 6. A vehicle door lock device according to claim 5.

7. a fixing plate fixed to the vehicle body and configured to fix the housing portion, the second shaft support portion, and the shaft support portion, 7. A vehicle door lock device according to claim 6.

8. The one direction is a direction along the vertical direction.

3. A vehicle door lock device according to claim 1 or 2.

9. A door for opening and closing the boarding and alighting entrance of the vehicle; a movable body fixed to the door and movable together with the door in an opening / closing direction for opening and closing the boarding / alighting entrance; an actuator including a housing portion fixed to a body of the vehicle, a first shaft portion capable of reciprocating in one direction between an inside and an outside of the housing portion, and a coil that drives the first shaft portion by an electromagnetic force; a second shaft portion that is connected together with the first shaft portion in a moving direction in the one direction and moves between a locked position where the door is engaged with the movable body at a fully closed position when the first shaft portion moves to the outside of the housing portion to lock the door and an unlocked position where the door is not engaged with the movable body when the first shaft portion moves to the inside of the housing portion; a second shaft support portion that is fixed to the vehicle body and supports the second shaft portion so as to be movable along the one direction, The first shaft portion and the second shaft portion are connected to each other so as to be relatively movable along the opening and closing direction. Vehicle door systems.

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